论文部分内容阅读
自耶茨(Yates)氏于三十年代首创“混杂设计”以来,农业上的复因子试验由完全区组(即一个区组内包含所有处理组合)过渡到不完全区组,从而多因子、多水平,按完全区组不易实施的复因子试验得以更有效地引入于农业研究手段中来。如采取混杂设计,一个2×2×2的三因子各二水平的试验,只要牺牲一个效应(通常是舍去一个高次连应)就可将区组缩小一半(由8个小区减少到4个小区);一个2~5的试验,牺牲三个效应,则可使区组缩小至四分之一。根据这一设计思想,即使数达百多个品种的单纯品种比较,也可以借“拟复因子”的组群分析来安排试验。这样就使“田间技
Since Yates’ first “hybrid design” in the 1930s, agricultural complex factorial trials have been transitioned from complete zoning (ie, including all treatment combinations within one zoning) to incomplete zoning, and thus multifactorial, Multi-level, complex factor experiments that are not easily implemented in complete blocks are more effectively incorporated into agricultural research tools. Taking a hybrid design, for example, a 2 × 2 × 2 three-factor, two-level experiment reduces the block size by half at a sacrifice of an effect (usually by rounding off a higher contiguity) (reduced from 8 cells to 4 A cell); a 2 to 5 experiment, sacrificing three effects, the group can be reduced to a quarter. According to this design idea, even if the number of simple varieties of more than 100 varieties of comparison, but also by “complex factor” group analysis to arrange the test. This makes "field technology